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Typical part defect repairing method for tail nozzle mechanical adjusting system

A technology for mechanical adjustment and defect repair, applied in aircraft parts, laser welding equipment, transportation and packaging, etc., can solve problems such as poor weldability, easy cracks, bubbles, etc., and achieve strong operability, improved strength, and simple process Effect

Active Publication Date: 2020-04-10
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

K424 is a nickel-based superalloy matrix material, which is a difficult-to-weld material with poor weldability. Typical parts based on K424 materials, such as regulators and seals, are prone to defects such as cracks and bubbles when the body is directly welded. Currently, K424-based materials There is no effective repair method for the defects of the adjusting plate and sealing plate

Method used

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  • Typical part defect repairing method for tail nozzle mechanical adjusting system
  • Typical part defect repairing method for tail nozzle mechanical adjusting system
  • Typical part defect repairing method for tail nozzle mechanical adjusting system

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0030] In order to solve the problems existing in the existing technology, such as Figure 1 to Figure 3 As shown, the embodiment of the present invention provides a method for repairing the defect of the typical part 3 of the tail nozzle mechanical adjustment system, including the following steps:

[0031] S1, such as figure 2 As shown in the initial inspection, the typical piece 3 with crack 1 is subjected to fluorescent inspection to determine the position, length and depth of crack 1.

[0032] S2, such as image 3 As shown, grinding, grinding the crack 1, the crack 1 is polished to form an open groove 2, and the oxides on the open groove 2 and th...

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Abstract

The invention discloses a typical part defect repairing method for a tail nozzle mechanical adjusting system, and belongs to the technical field of aero-engine K424 material part defect repairing. Thetypical part defect repairing method for the tail nozzle mechanical adjusting system comprises the following steps: S1, initial inspection is conducted, and the position, length and depth of a crackare determined; S2, grinding is conducted, specifically, the rack is ground, and an open groove is formed after the crack is ground off; S3, repairing is conducted, specifically, high-precision laserforming equipment and a high-energy precision welding repairing machine are adopted for repairing a typical part, wherein repairing specifically comprises the steps of repairing preparation, part preheating, fusion covering of the open groove and peripheral surface thereof, bonding layer grinding and welding repairing; S4, stress relief heat treatment after welding; and S5, inspecting is conducted. According to the typical part defect repairing method for the tail nozzle mechanical adjusting system, a laser fusion welding and precision pulse welding combined repairing method is adopted, so that operability is high, welding parameters are stable, the process is simple, the part repairing percent of pass is effectively increased, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of defect repairing of aero-engine K424 material parts, in particular to a method for repairing defects of typical parts of a tail nozzle mechanical adjustment system. Background technique [0002] The regulator and seal are one of the important parts of the tail nozzle of the aero-engine. Due to the high-temperature environment, cracks and ablation problems are relatively common, especially in stress-concentrated parts such as corners. After the engine is in operation, most of the regulators and seals are found to be cracked. It was scrapped beyond the standard, and the problem of K424 material regulating sheet and sealing sheet was particularly prominent. K424 is a nickel-based superalloy matrix material, which is a difficult-to-weld material with poor weldability. Typical parts based on K424 materials, such as regulators and seals, are prone to defects such as cracks and air bubbles when the body is direc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/04B23K26/348
CPCB23P6/04B23P2700/01B23K26/348
Inventor 王邦赛蓝天霞曲连志吕晶杨彦红
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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